Construction of a nomogram model to predict technical difficulty in performing laparoscopic sphincter-preserving radical resection for rectal cancer

Figure 10  Correction curves for the nomogram prediction model predicting the difficulty of laparoscopic sphincter-preserving radical resection for rectal cancer. Note: The y-axis is the probability of the actual difficulty of laparoscopic sphincter-preserving radical resection for rectal cancer, and the x-axis is the probability of the predicted difficulty of laparoscopic sphincter-preserving radical resection for rectal cancer. The diagonal dotted line represents the perfect prediction of an ideal model, and the green line represents the performance of the nomogram. The closer it is to the diagonal dotted line, the better the prediction performance.